Home / 839,813,998.80-1,259,720,998.20-355,139,806.80

Finding the Fourth Proportional to 839,813,998.80, 1,259,720,998.20 and 355,139,806.80

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Solution

The fourth proportional to 839,813,998.80, 1,259,720,998.20 and 355,139,806.80 is: 532,709,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,813,998.80 : 1,259,720,998.20 = 355,139,806.80 : x
  2. Step 2: Convert to fraction form
    839,813,998.80/1,259,720,998.20 = 355,139,806.80/x
  3. Step 3: Cross multiply
    839,813,998.80x = 1,259,720,998.20 × 355,139,806.80
  4. Step 4: Simplify right side
    839,813,998.80x = 447,377,071,922,651,200
  5. Step 5: Solve for x
    x = 447,377,071,922,651,200/839,813,998.80
  6. Step 6: Final answer
    x = 532,709,710.20

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.